byBolt, John R., 1940-; Field Museum of Natural History
The armored dissorophid (Superfamily Dissorophoidea) labyrinthodont amphibian Cacops aspidephorus is unusual in having a large otic notch closed posteriorly by the tabular. Cacops was previously known only from the "Cacops Bone Bed," Lower Permian of Texas. Poor preservation makes this material difficult to study. Excellently preserved, though disarticulated, Cacops material has now been recovered from the Fort Sill fissure fills, which are probably very close in age to the... Topics: Amphibians, Fossil, Paleontology -- Permian, Paleontology -- Oklahoma
Silicified bryozoans in chert nodules derived from the Kaibab Formation are apparently all from facies 1 of the Beta Member. The bryozoans are a typical Permo-Carboniferous assemblage of stenoporid trepostomes, fistuliporid cystoporates, fenestrates, and rhomboporid cryptostomes. Taxa included are in the genera ?Stenodiscus, Fistulipora, Meekopora, Fenestella, Bicorbis, Rhabdomeson, Streblotrypa, and Girtypora (G. maculata, n. sp.). Bicorbis is known only from the Kaibab and equivalent strata... Topics: Bryozoa, Fossil, Paleontology -- Arizona Grand Canyon, Paleontology -- Permian
Burrow-casts from fresh-water deposits of the Late Paleozoic have given concrete evidence of the aestivation of the lungfish, Gnathorhiza, and the amphibian, Lysorophus. The structure of these burrows and inference concerning the life habits of their occupants are analyzed, with special attention to Lysorophus. A previously unknown type of burrow, found in association with those of lung fish is described. It is a large, complex structure, ovoid in cross-section and oriented vertically in the... Topics: Burrowing animals, Fossil, Paleontology -- Carboniferous, Lung-fishes, Fossil, Amphibians, Fossil,...